Could someone steal my PIN and vote with it?
Stealing and opening another person’s mail is illegal. It is also illegal to represent yourself as another person and steal their right to vote in an election. Both these acts are illegal and have penalties defined by law. If you know someone has voted your PIN illegally, you should report it to the Election Official. You can obtain a replacement PIN to cast your vote by presenting yourself to the Election Official and swearing an affidavit that the PIN assigned to you was not voted by you but by someone else.